Muons on the Moon

Neutrino astronomy on the earth is currently signal‐limited, rather than background‐limited. Thus the absence of atmospheric muon background on the moon does not provide any obvious advantage in the search for point sources, although some advantage may exists for diffuse sources. A lunar detector for neutrino astronomy will still have to be as large as any on earth. The earlier suggestion that a window around 1 GeV exist, where backgrounds on earth are large, is shown to not provide for likely detectable sources.